Dayton, OH Weather & Climate Normals
Dayton's real weather, in one number
Dayton, OH scores 46/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Dayton's hottest and coldest months
Dayton's hottest month is Jul, averaging 76°F; its coldest is Jan, averaging 30°F, a 46.5°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Dayton
Dayton averages 41.33in of precipitation a year across roughly 134 days with measurable rain or snow, and 25in of snow a year.
Where Dayton ranks
Dayton ranks 2905 of 4876 US cities in this dataset for comfort score, and 174 of 254 within OH. About 136,346 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from DAYTON INTL AP, OH US, 8.4 miles from Dayton, not a prediction for any specific day.
More on how this is worked out
How the comfort score is calculated · Why some cities show no snow or rain figure